The third and what should be last of the test builds for the 7.3-RELEASE
cycle, 7.3-RC2, is available for amd64, i386, pc98, and sparc64
architectures. The target schedule as well as the current status of the
release is available here:

The schedule has slipped by a bit over a week so the actual target for
the release announcement is really about a week and a half from now. If
you notice problems you can report them through the normal Gnats PR
system or on the freebsd-stable mailing list.

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You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump